Some gents need oxygen, perhaps just because of old age. There is no worry, because everyone needs help sooner or later in life. While medicine is perfectly common, it often presents a challenge to daily life, especially when that medicine weighs over ten pounds and must travel with you. Anytime a person with oxygen decides to go anywhere, they have the trouble of taking their needs with them. This can be a single tank for short trips, or several tanks for a vacation.